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FIBER OPTIC TRANSMISSION SYSTEM
51 Stouts Lane, Monmouth Junction, NJ 08852, U.S.A.
Tel: 1-888-685-2002 (toll-free, USA)
1-732-355-9100
Fax: 1-732-355-9101
N3952 SERIES
Digital 8-ch Unidirectional or 4-ch Bidirectional Contact Closure Signal Collector
E-mail: [email protected]
User Manual
V2.7 1303
Infinova
Contents
SERVICE NOTICE .............................................................................................................. 1
PRODUCT DESCRIPTION ................................................................................................ 2
ORDERING INFORMATION............................................................................................. 2
INSTALLATION................................................................................................................... 3
POWER SUPPLY ................................................................................................................. 3
4-POSITION DIP-SWITCH DEFINITION ....................................................................... 3
PANEL DESCRIPTION ....................................................................................................... 4
N3952X-4...........................................................................................................................4
CABLE DIAMETER CALCULATION AND LIGHTNING & SURGE
PROTECTION...................................................................................................................... 5
SERVICE NOTICE
The installation of this product should be conducted by qualified personnel. Do not
attempt to service this product yourself. Refer all servicing to qualified personnel.
If you require information during installation of this product or if service seems necessary,
contact the local suppliers or Infinova at 1-732-355-9100 in 51 Stouts Lane, Monmouth
Junction, NJ 08852 U.S.A. You must obtain a Return Authorization Number and shipping
instructions before returning any product for service.
Our obligation under this warranty is limited only to the repair or replacement of any of
our products, provided that products are used within the specified ratings and applications,
and that products are applied in accordance with good engineering practices, and that
products are proved by our examination to be defective.
This warranty does not extend to any Infinova products which have been subject to acts of
accident, misuse, abuse, neglect, improper application or installation, improper operation
or maintenance, connection to an improper voltage supply or to materials which have
been altered or repaired outside an authorized Infinova factory repair center.
Information provided by Infinova is accurate and reliable. However, no responsibility is
assumed by Infinova for its use; nor for any infringements of other rights of third parties
which may result from its use. No license is granted by implications or otherwise under
any patent or patent rights of Infinova.
WARNING
TO REDUCE THE RISK OF FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS PRODUCT TO
RAIN OR MOISTURE.
DO NOT LOOK INTO OPTICAL PORTS WITH POWER ON.
1
PRODUCT DESCRIPTION
Description
The N3952 series is a contact closure signals collector. This series can convert the input
contact closure signals to one RS-232/RS-422 data, and convert input RS-232/RS-422
data to 8-ch unidirectional or 4-ch bidirectional contact closure signals. It can transmit the
contact closure signals over a long distance when connecting with fiber optical
transmission system. The number of contact closure channels is default setting, so are the
data format.
8-ch unidirectional N3952T-8 is compatible with unidirectional N3952R-8, 4-ch
bidirectional N3952X-4 is compatible with N3952X-4.
The series can be used in the field of smart buildings, Security and Surveillance,
Telemedicine, Broadcast, Cable TV and etc.
System Diagram
ORDERING INFORMATION
Refer to the table below for the configurations of specific models.
Model
Descriptions
N3952X-4-M/R
Digital 4-ch bidirectional Contact Closure signals transceiver
N3952T-8-M/R
Digital 8-ch unidirectional Contact Closure signals transmitter
N3952R-8-M/R
Digital 8-ch unidirectional Contact Closure signals receiver
2
INSTALLATION
To install the series, RS232/RS422 data input/output is via one 4-pin connector and
contact closure signal input/output via one 16-pin connector.
The series includes rack mount card unit and standalone Module:
To install Card Units: Slide the top and bottom card extrusions along the mirror image
card guides (not in spaces between the guides). There is an Infinova logo at the top of
card front panel to indicate proper top to bottom orientation. Push hard to make good
connection to motherboard - loud snap indicates good installation. There are two captive
screws on top and bottom of front panel that hold each card to the subrack. These must be
locked by hand in a clockwise manner (do not over tighten).
WARNING: A FULLY LOADED SUBRACK REQUIRES FORCED AIR
COOLING IN THE RACK. TO AVOID OVER HEATING OF CARD UNITS,
WHENEVER POSSIBLE, INSTALL IN EVERY OTHER SLOT.
POWER SUPPLY
POWER SUPPLY FOR CARD UNITS:
The unit is powered by a plug-in power supply that is offered with the appropriate desk
chassis or EIA 19" subrack.
4-POSITION DIP-SWITCH DEFINITION
There is DIP-1 and DIP-2 to set the address for each fiber optical transmission, DIP-3 and
DIP-4 is to select data direction. The detail is
DIP-3
DIP-4
ON
Receive
Unidirectional
OFF
Transmit
Bidirectional
3
PANEL DESCRIPTION
N3952X-4
4-ch Bidirectional Contact Closure Signal Transceiver
POWER ON INDICATOR
4-PIN DATA I/O
1#: DATA OUT+
2#: DATA OUT3#: DATA IN+
4#: DATA IN-
PWR
1
DATA OUTPUT INDICATOR
2
3
DATA INPUT INDICATOR
4
CHASSIS GND
EARTHING FOR SURGE PROTECTION
16-PIN DATA I/O
01#: CH.1 COM
02#: CH.1 N.O.
03#: CH.1 ALARM IN
04#: CH.1 GND
05#: CH.2 COM
06#: CH.2 N.O.
07#: CH.2 ALARM IN
08#: CH.2 GND
09#: CH.3 COM
10#: CH.3 N.O.
11#: CH.3 ALARM IN
12#: CH.3 GND
13#: CH.4 COM
14#: CH.4 N.O.
15#: CH.4 ALARM IN
16#: CH.4 GND
1
CH.1 C.C. SIGNAL OUTPUT INDICATOR
2
3
CH.1 C.C. SIGNAL INPUT INDICATOR
4
5
CH.2 C.C. SIGNAL OUTPUT INDICATOR
6
7
CH.2 C.C. SIGNAL INPUT INDICATOR
8
9
CH.3 C.C. SIGNAL OUTPUT INDICATOR
10
11
CH.3 C.C. SIGNAL INPUT INDICATOR
12
13
CH.4 C.C. SIGNAL OUTPUT INDICATOR
14
15
CH.4 C.C. SIGNAL INPUT INDICATOR
16
4
CABLE DIAMETER CALCULATION AND LIGHTNING & SURGE PROTECTION
Relation between 24VAC Cable Diameter and Transmission Distance
In general, the maximum allowable voltage loss rate is 10% for AC-powered devices. The
table below shows the relationship between transmission power and maximum
transmission distance under a certain specified cable diameter, on condition that the
24VAC voltage loss rate is below 10%. According to the table, if a device rated at 50W is
installed 17-meter away from the transformer, the minimum cable diameter shall be
0.8000mm. A lower diameter value tends to cause voltage loss and even system
instability.
Diameter (mm)
0.8000
1.000
1.250
2.000
10
283 (86)
451 (137)
716 (218)
1811 (551)
20
141 (42)
225 (68)
358 (109)
905 (275)
30
94 (28)
150 (45)
238 (72)
603 (183)
40
70 (21)
112 (34)
179 (54)
452 (137)
50
56 (17)
90 (27)
143 (43)
362 (110)
60
47 (14)
75 (22)
119 (36)
301 (91)
70
40 (12)
64 (19)
102 (31)
258 (78)
80
35 (10)
56 (17)
89 (27)
226 (68)
90
31 (9)
50 (15)
79 (24)
201 (61)
100
28 (8)
45 (13)
71 (21)
181 (55)
110
25 (7)
41 (12)
65 (19)
164 (49)
120
23 (7)
37 (11)
59 (17)
150 (45)
130
21 (6)
34 (10)
55 (16)
139 (42)
140
20 (6)
32 (9)
51 (15)
129 (39)
150
18 (5)
30 (9)
47 (14)
120 (36)
160
17 (5)
28 (8)
44 (13)
113 (34)
170
16 (4)
26 (7)
42 (12)
106 (32)
180
15 (4)
25 (7)
39 (11)
100 (30)
190
14 (4)
23 (7)
37 (11)
95 (28)
200
14 (4)
22 (6)
35 (10)
90 (27)
Distance (ft / m)
Power (W)
5
Lightning & Surge Protection
The product adopts multi-level anti-lightning and anti-surge technology integrated with
gas discharge tube, power resistor and TVS tube. The powerful lightning and surge
protection barrier effectively avoids product damage caused by various pulse signals with
power below 4kV, including instantaneous lightning, surge and static. However, for
complicated outdoor environment, refer to instruction below for lightning and surge
protection:
 The product features with dedicated earth wire, which must be firmly grounded. As for
surveillance sites beyond the effective protection scope, it’s necessary to erect
independent lightening rods to protect the security devices. It’s recommended to
separate the lightning rod from the mounting pole, placing the rod on an independent
pole, as shown in the figure below. If the product has to be installed on the same pole or
pedestal for lightning rod, there should be strict insulation between the video cable
BNC terminal, power cable, control cable and the standing pole of the lightning rod.
 For suburb and rural areas, it’s recommended to adopt direct burial for the transmission
cables. Overhead wiring is prohibited, because it’s more likely to encounter lightning
strike. Use shielded cables or thread the cables through metal tubes for burial, thus to
ensure the electric connection to the metal tube. In case it’s difficult to thread the cable
through the tube all the way, it’s acceptable to use tube-threaded cables only at both
ends of the transmission line, yet the length in burial should be no less than 15 meters.
The cable sheath and the tube should be connected to the lightning -proof grounding
device.
 Additional high-power lightning-proof equipment and lightning rods should be
installed for strong thunderstorm or high induced voltage areas (such as high-voltage
substation).
 The lightning protection and grounding for outdoor devices and wires should be
designed in line with the actual protection requirement, national standards and
industrial standards.
 The system should perform equipotential grounding by streaming, shielding, clamping
and earthing. The grounding device must meet anti-interference and electric safety
requirements. There should be no short-circuiting or hybrid junction between the
device and the strong grid. Make sure there’s a reliable grounding system, with
grounding resistance below 4Ω (below 10Ω for high soil resistivity regions). The
cross-sectional area of the earthing conductor should be no less than 25mm².
LPZOA
30°
LPZOB
30°
Lightning rod
Front device for
surveillance system
Mounting pole
for front device
Separated layout for the lightning
rod and the standing pole
6
FIBER OPTIC TRANSMISSION SYSTEM
51 Stouts Lane, Monmouth Junction, NJ 08852, U.S.A.
Tel: 1-888-685-2002 (toll-free, USA)
1-732-355-9100
Fax: 1-732-355-9101
N3729 SERIES
Digital One Video Channel with Return Data
E-mail: [email protected]
User Manual
V1.1 1311
Infinova